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  1. M

    DIY 18650 protection?

    Has anyone here added protection to harvested 18650 cells? I ran across this at DX: http://www.dealextreme.com/details.dx/sku.26112 I would not have known what I was looking at, if it wasn't for the two threads showing disassembled protected cells. I've got several unprotected 18650 cells...
  2. M

    Overdriving a Q5

    I bought one of these a while back and am quite pleased with its throwing ability. UniqueFire HS-802 http://www.dealextreme.com/details.dx/sku.16538 I use it on my bicycle for commuting and after dropping it a few times, the emitter came apart and conked out. I replaced the dead, R2-WC emitter...
  3. M

    Desperately seeking charger...

    My 18650 battery charger fried out last night (it made a loud pop and then quit working). I can order a new one from DX but I'll need to recharge my batteries before my commute to work on Monday. Is there a store that carries chargers for 18650 batteries anywhere in the North Texas area? I...
  4. M

    LED came off the star

    On my way to work, by headlight vibrated loose and made a dive for freedom. When I picked it up, it wouldn't come on. On the roadside, I disassembled it and realized the LED came off the star. With some fiddling, and an extra o-ring between the lens and the reflector, I was able to get it...
  5. M

    Trying to decipher resistor numbers?

    I have several resistors here in front of me... This is what they say on the packages: 1: 1/2w 4.7 ohm 5% 2: 2w .47 ohm 5% 3: 5w 2.2 ohm 5% 4: 5w 2.7 ohm 5% And both 5w resistors have a store label that reads "Power Wirewound Resistor. Voltage = 200." I guess it just baffles me that a half...
  6. M

    Over-amp a blinkie?

    I'm awaiting my new 18650-headlight to show up. I'm planning to run it from an external battery and would like to have my tail lights pull from the same central power source. I use three 9-LED blinkies that are designed to run off 2x AAA. Right now, I have them all wired to an external 2x AA...
  7. M

    DIY "Super" taillight (concepting stage)

    I'm pretty sure I have my front-lighting situation squared away, but I'd like to upgrade my taillights. Currently, I'm running three Viewpoint Flashpoint "High Intensity" (their description), blinkies all wired to a DIY external battery pack. I keep two of them on steady and the middle one...
  8. M

    Easy HS-802 Question, I hope...

    Will this: http://www.dealextreme.com/details.dx/sku.4584 Fit in this: http://www.dealextreme.com/details.dx/sku.19029 Thanks.
  9. M

    Parallel batteries

    I have a headlight that runs on 2x CR123 batteries. I'd like to increase the run time for my commute. My thinking is that I can use 4x CR123 batteries, but do it so that there are 2 pairs, (each pair set up as a series) running parallel. The diagram shows my plan. Did I think this through...
  10. M

    2x CR123 battery holder?

    On my bike, I have a headlight running off of a DIY external 4x AA battery pack and three tail lights running off a DIY external 2x AA battery pack. I'm using rechargeable batteries(1.2v) so instead of pushing 6v and 3v, respectively, the lights are functioning on 4.8v and 2.4v. So, on my ride...
  11. M

    Current flow question

    So the drivers I ordered, back in February from DX, finally showed up. I know that it will run battery to driver to lamp and then back to battery. However, does it matter which side of the battery the driver is wired into? i.e.—Does the driver need to be attached to the wire coming off the (+)...
  12. M

    DX alternative for LED driver?

    In mid-February, I placed an order for the parts I needed to upgrade my NR Trail Rat from Halogen to LED. Within a week or so, I got everything except the LED driver, (sku 7425). Several more weeks went by and the part's back-order date kept getting pushed back, (as of today, it says the part...
  13. M

    Cree Q5, no driver, just resistors

    I've got my Cree Q5 and am ready to replace my 15w halogen headlight. However, I decided not to run a modulated driver with it. I'm going to use an on/off/on switch, wiring different resistors from each of the "on" positions. It will be running from a 4.0 Ah-6 Volt NiMH battery. Do I still...
  14. M

    NR Smart Charger

    I have a NR Trail Rat which I am waiting on parts from DX to mod it. But I digress... It has a 4.0 Ah-6 Volt NiMH battery and a 9-hour, dumb charger. NiteRider sells a 2.5-hour, smart charger, but they want $83 for it! I didn't even pay that much for this light, off the shelf. I can get it on...
  15. M

    Headlight - Halogen to LED

    I currently run two headlights on my 45-mile commute. One is a NiteRider Trail Rat Select, 15w halogen with a 4.0 Ah-6 Volt NiMH battery. The other is a Planet Bike Super Spot, 1w LED with rechargeable AAs. I used to only use the LED, but there are areas along my commute where it does not give...
  16. M

    Bike blinkie re-wire

    I've searched the forum, but haven't found anyone who has modded LED blinkies as I am wanting to. I commute to work on my bicycle. The route I take puts me on fairly major streets for 35+ miles so the more visible I am, the better. I run three 9-LED blinkies on the back of my bike. They line up...

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